Knife-handle.



N0I 857,400. PATENTND JUNN181907. 0. nfHANRINGToN. KNIFE HANDLE.

APPLICATION FILED MAEJ. 1906.

I UNITED STATES PATENT OEETCE.

CHARLES D. EARRINGTON, OE SOUTHRRIDGE, MASSACHUSETTS, ASSIGNOR To HARRINGTON OUTLERY COMPANY, A CORPORATION OE MASSACHU- SETTS.

KNIFE-HANDLE.

Patented June 1s, 1907.

. Application ned March 3,1906. serai No. 303.938.

To LLM whom it may concern:

Be it known that l, CHARLES D. HARRING- TON, a citizen of the United States, residing at Southbridge, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Knife-Handles, of which the following is a specification. i V

My invention relates to knife handles, and more particularly to that classof handles which are adapted to hold movable knife blades, particularly shoe knife bladesL In 'this class of knife handles, two grooved clamping jaws, for clamping and holding the long blade, are tordinarily employed; said jaws are inclosed within the handle proper, of wood or other material, and are adapted to be opened .and closed, or moved toward and away from each other, by turning the handle in one direction or the other, the jaws being held stationary. The inner end of the clamping jaws are connected with a screw, which is turned in or out in a screw nut secured in the end of the handle, all in the. usual and well known way.

The object of my invention is to improve upon the construction of a knife handle of the class above referred to, and more particularly upon the construction of the means for attaching the screw to the clamping jaws, and my invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

Referring to the drawing Figure 1 is a side view of a knife handle in section, and of the clamping jaws, and the operating screw, embodying my improvements; the clamping jaws are shown moved apart, with a knife blade between them. Fig. 2 corresponds to Fig. l, but shows the clamping jaws moved together to clamp the knife blade.A Fig. 3 is, on an enlarged scale, a detached view of the inner end of the clamping jaws and the op'- erating screw, shown in Fig. 1. Fig. 4 shows the ends of the clamping jaws shown in Fig. 3, with the upper surface of the lower jaw broken away. Fig. 5 is a perspective view of the operating screw shown in Fig. 3, detached. Fig. 6 is a Section, on line 6, 6,- Fig. 3, looking in the direction o f arrow a, same figure. Fig. 7 shows a modified construction of the head of the operating screw, which' is adapted to be used with the construction shown in Fig. 8. Fig 8 shows a modified construction of the inner ends ofthe clamping jaws to be used with the construction of the screw head shown in Fig. 7. Fig. 9 shows another modified construction of the head of the operating screw, which is adapted to be used with the construction shown in Fig. 10, and, Fig. 10 shows another modied conf struction of the inner ends of the clamping jaws, to be used with the construction of the screw head shown in Fig. 9.

In the accompanying drawing, l is the handle, of wood or other suitable material, which is of any desired shape and size. The handle l preferably has a metallic bushing -or sleeve 2 extending within its inner end,

and'secured therein. IUpon the bushing 2 is mounted, to turn loosely thereon, a metal ferrule 3. In the opposite end of the handle l, is a screw nut 4, to receive the screw 5.

Within the handle l loosely extend the two clamping jaws 6., grooved or recessed to re ceive the inner end of the knife blade 7. The jaws 6 have cam shaped projections 6 on their outer edges, at their outer ends.

All of the above mentioned parts, are the parts ordinarily used in a knife handle ofthe class referred to.

I will now describe my improvements, relating particularly as above stated to the means for attaching the operating screw to the clamping jaws.

The clamping jaws 6 must be attached to the operating screw 5 in such amanner, that they can be moved apart, or moved together equally throughout their length, to adapt them to varying widths of knife blades, and when brought together to clamp the knife blade they will bear with equal pressure throughout theirfull length.

In my improved construction of the means for attaching the clamping .jaws to the operating screw, I preferably provide the clamping screw 5 with a flat head or end 5, of a less width than the width of the two clamping jaws, and having preferably an engaging surface,'or projection 5 see Fig. 5, on the flat surface of the head 5 intermediate its edges, oneach side of said head, see Fig. v6, which forms a retaining block. In this instance IOO the projection 5" is made integral with the flat end 5', but it may be made separate therefrom and secured thereto. Each clamping jaw 6 near its inner end has a notch 6. The notches 6 are on the contiguous edges of the jaws as shown in Fig. 4. The head 5 on the screw 5 is adapted to enter within the grooved portions of the clamping .jaws 6, and one retaining block 5" isadapted to enter the transverse openings 6 in one side of the clamping jaws 6, and the other retaining block 5" is adapted to enter the transverse openings 6 vin the other side of the clamping jaws 6, as shown in Fig. 6, and thus attach the clamping jaws 6 to the operating screw 5.

In assembling the parts, the head 5 of the o erating screw 5 is rst attached to the c amping jaws 6, by spreading apart the jaws at their slotted ends, and inserting the head 5 of the screw 5 between them, in such a position that the retaining block 5 on one side will enter the openings 6 in one side of the clamping jaws 6, and the retaining block 5 on the opposite side of the head 5', will enter the o enings or notch 6" in the other side of the c amping jaws 6. The clamping jaws 6, with the operating screw 5 thus attached thereto, are then inserted within the handle 1, and the end of the screw 5 engaged with the nut 4, and the handle l turned to draw the clamping jaws 6 within the handle. The

knife blade 7 is then inserted between the clamping jaws 6, and the continued turning of the handle l will draw the screw 5 farther through the nut 4, and draw the clamping jaws 6 within the handle, until the cam shaped portions 6/ thereon engage the outer end of the ferrule 3, and force the jaws together, to securely clamp the inner end of the knife blade 7 within the clamping jaws 6, as shown in Fig. 2.

In Fig. 7 is shown a modified construction of the operating screw. In said modified construction, the flat head 5 of the screw 5 has instead of the retaining blocks 5, a retaining lip 5a on one side of the head 5 at its inner end, which is adapted to extend into transverse slots 6a in each of the clamping jaws 6, at their inner ends, on the same side of said jaws, as shown in Fig. 8.

In Fig. 9 is shown another modified construction of the operating screw. In said figure, the head, 5 has a retaining lip or flange 5b, upon each side of the head 5, at its inner end, and extending the full width of the head. The retaining lip or ange 5b is adapted to enter the transverse slots 6b in both sides of the inner ends of the clamping jaws.

The advantages of my improvements will be readily appreciated by those skilled in the art. The manner of attaching the clamping jaws to the operating screw is very simple, and the head or inner end of the screw is so attached to the clamping jaws that the outer edges of the clamping jaws are left intact, with a smooth even surface to move within the handle portion, and the retaining blocks or lips on the operating screw, which extend into slots or openings in the clamping jaws, are preferably of such a thickness, that their outer surfaces are in the same plane as the fiat surfaces of the clamping jaws, and do not extend beyond the same, as clearly shown in Fig. 6. j

It will be understood that the details of construction of my improvements may be varied lif desired. A

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. The combination with a handle having a screw nut in one end, of clamping jaws, each having a longitudinal groove on its inner edge to receive a'knife blade, and each having in its inner edge near its inner end a notch, said notches registering one with the other, a screw turning in said nut and having a iiat head to extend between the clamping jaws within the grooves therein, and a block or lip on said head adapted to engage said notches in the clamping jaws.

2. The combination with a handle having a screw nut in one end, and a rotary ferrule on the other end, of clamping jaws, each having a cam-shaped projection on one end to engage said ferrule, and a longitudinal groove therein to receive a knife blade, and a notch on-the inner edge of each of said clamping jaws near its inner end, a screw turning in said screw nut and having a flat head to extend between the clamping jaws within the grooves therein, and an integral projection or projections onV said head adapted to engage'notches in the clamping jaws.

CHAS. f D. HARRINGTON.

Witnesses:

F. D. MoRsE, G. A. SHEPARD.

TOO 

